[PATCH 6.1 024/236] pinctrl: core: delete incorrect free in pinctrl_enable()

Greg Kroah-Hartman
2024-05-14T11:28:27Z

From: Dan Carpenter <dan.carpenter@linaro.org>

[ Upstream commit 5038a66dad0199de60e5671603ea6623eb9e5c79 ]

The "pctldev" struct is allocated in devm_pinctrl_register_and_init().
It's a devm_ managed pointer that is freed by devm_pinctrl_dev_release(),
so freeing it in pinctrl_enable() will lead to a double free.

The devm_pinctrl_dev_release() function frees the pindescs and destroys
the mutex as well.

Fixes: 6118714275f0 ("pinctrl: core: Fix pinctrl_register_and_init() with pinctrl_enable()")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Message-ID: <578fbe56-44e9-487c-ae95-29b695650f7c@moroto.mountain>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pinctrl/core.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index f1962866bb814..1ef36a0a7dd20 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -2098,13 +2098,7 @@ int pinctrl_enable(struct pinctrl_dev *pctldev)

error = pinctrl_claim_hogs(pctldev);
if (error) {
- dev_err(pctldev->dev, "could not claim hogs: %i\n",
- error);
- pinctrl_free_pindescs(pctldev, pctldev->desc->pins,
- pctldev->desc->npins);
- mutex_destroy(&pctldev->mutex);
- kfree(pctldev);
-
+ dev_err(pctldev->dev, "could not claim hogs: %i\n", error);
return error;
}

--
2.43.0